The newspaper editor was arrested in 2015 and originally charged under the country’s terror laws with communicating with an outlawed group, Ginbot 7.
That was later changed to ecouraging revolt.
Mr Getachew’s lawyer Ameha Mekonnen, speaking to AFP, says his client denies the charges.
The press freedom group the Committee to Protect Journalists has called the convictiona “further blow to press freedom in the country”.undefined
Amnesty International’s regional director Muthoni Wanyeki called the decision “a further slap in the face for justice,” reports the AFP news agency.
MrGetachew is expected to be sentenced on 26 May and faces up to 10 years in prison.